Instrumentation and Quench Protection for LARP Nb3Sn Magnets

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The US LHC Accelerator Research Program (LARP) is developing Nb{sub 3}Sn prototype quadrupoles for the LHC interaction region upgrades. Several magnets have been tested within this program and understanding of their behavior and performance is a primary goal. The instrumentation is consequently a key consideration, as is protection of the magnet during quenches. In all LARP magnets, the flexible circuits traces combine the instrumentation and the protection heaters. Their fabrication relies on printed circuit technology based on a laminate made of a 45-micron thick kapton sheet and a 25-micron thick foil of stainless steel. This paper reviews the protection heaters ... continued below

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Felice, H.; Ambrosio, G.; Chlachidize, G.; Ferracin, P.; Hafalia, R.; Hannaford, R. C. et al. August 17, 2008.

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The US LHC Accelerator Research Program (LARP) is developing Nb{sub 3}Sn prototype quadrupoles for the LHC interaction region upgrades. Several magnets have been tested within this program and understanding of their behavior and performance is a primary goal. The instrumentation is consequently a key consideration, as is protection of the magnet during quenches. In all LARP magnets, the flexible circuits traces combine the instrumentation and the protection heaters. Their fabrication relies on printed circuit technology based on a laminate made of a 45-micron thick kapton sheet and a 25-micron thick foil of stainless steel. This paper reviews the protection heaters designs used in the TQ (Technology Quadrupole) and LR (Long Racetrack) series as well as the one used in LBNL HD2a high field dipole and presents the design of the traces for the Long Quadrupole (LQ), addressing challenges associated with the stored energy and the length of the magnet.

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  • Journal Name: IEEE Transactions on Applied Superconductivity; Journal Volume: 19; Journal Issue: 3; Related Information: Journal Publication Date: June 2009

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  • Report No.: LBNL-2351E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 971633
  • Archival Resource Key: ark:/67531/metadc934500

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 17, 2008

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  • Nov. 13, 2016, 7:26 p.m.

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  • Jan. 4, 2017, 3:07 p.m.

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Felice, H.; Ambrosio, G.; Chlachidize, G.; Ferracin, P.; Hafalia, R.; Hannaford, R. C. et al. Instrumentation and Quench Protection for LARP Nb3Sn Magnets, article, August 17, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc934500/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.